(Taipei)Senior SOC Analyst (Tier 3)

Job Summary
We are seeking a Senior SOC Analyst (Tier 3) to join our global security operations team. This role serves as the in-house escalation point for our Managed Detection and Response (MDR) provider, leads complex investigations, and drives incidents through to resolution. You will work with the MDR lead during your shift to validate triage quality, tune detections, and ensure our environment is well-defended against evolving threats. In addition to core SecOps responsibilities, this role will support global security projects and audits (such as NIST, ISO, and TISAX) by providing operational evidence, control validation, and audit narratives.

Key Responsibilities
1. Escalated Incident Response & Investigation
•Serve as the internal escalation point for incidents escalated by the MDR provider.
•Lead containment, eradication, and recovery activities for confirmed incidents.
•Conduct deep-dive investigations, root cause analyses, and forensic reviews across endpoint, identity, network, and cloud environments.
•Work with the Infrastructure team and regional Security leads to coordinate cross-functional responses and communicate status updates to the SOC Manager and leadership.
•Produce clear, well-documented investigation reports and technical documentation in English and Chinese.

2. MDR Oversight & Governance
•Review MDR escalations for quality, accuracy, and completeness; provide feedback and challenge false positives or missed context.
•Partner with the SOC Manager on MDR QBRs, SLA reviews, and service tuning.
•Identify coverage gaps between the MDR scope and our environment, and drive remediation.

3. Threat Hunting & Detection Engineering
•Perform proactive, hypothesis-driven threat hunts using KQL in Microsoft Sentinel and Defender XDR.
•Develop and tune custom detection rules, analytics, and correlation logic in Sentinel.

4. Threat Intelligence & Vulnerability Correlation
•Assist operationalize threat intelligence (IOCs, TTPs, threat actor profiles) into detections and hunts.

5. Global Security Projects & Audit Support
•Support ad-hoc global security projects as directed by the SOC Manager and security leadership.
•Provide operational evidence, log extracts, and control validation for NIST, ISO, and TISAX audit narratives.
•Partner with regional GRC, IT, and business stakeholders on security initiatives.
•Participate in tabletop exercises, purple team engagements, and audit walkthroughs.

6. Reporting, Metrics & Continuous Improvement
•Contribute to SOC reporting MDR performance, incident trends, MTTD/MTTR, and top threats for the SOC Manager and executive stakeholders.
•Maintain accurate documentation of investigations, evidence, and chain of custody.
•Drive continuous improvement of SOC playbooks, runbooks, and response procedures.
•Mentor junior team members and share knowledge across the security operations team.

About YAGEO

-The best Passive Component service provider in the world

YAGEO is a leading global electronic component company with capabilities on a worldwide scale, including sales, production, and R&D facilities in Asia, Europe, and the Americas. We provide one-stop shopping, offering a complete product portfolio of resistors, capacitors, inductors, sensors, and other passive components to meet the diverse requirements of customers.

We don’t build the final product. We create what makes it possible. From resistors to capacitors, inductors to sensors—our components power the breakthroughs that move the world forward. Electric vehicles. AI data centers. Satellites. Sonar systems. They move faster, last longer, reach farther—with a spark of us inside.

#LI-LY1